I have a bunch of VBox Linux VMs (CentOS 6/7, Debian7/8/9, Ubuntu (14.0/16.04, Alpine) that get dynamic IPs. To get their respecitive IP addresses I have to login and run 'ip addr'
I would like such info to be displayed on the VM console *before* the login prompt. Ideally an ASCII log + info (see below sig line). Thus, I can get the info from the VM console without having to login.
I read up on /etc/issue but adding "\4{eth0}" to the existing string does not work.
TIA for solutions/pointers
-- Arun Khan
<console display>
_ _ | |__ ___ ___| |_ _ __ __ _ _ __ ___ ___ | '_ \ / _ / __| __| '_ \ / _` | '_ ` _ \ / _ \ | | | | (_) __ \ |_| | | | (_| | | | | | | __/ |_| |_|___/|___/__|_| |_|__,_|_| |_| |_|___|
lo: 127.0.0.1 eth0: 10.1.1.122 kernel: 4.10.0-33-generic x86_64
login:
</console display>
What does 'man agetty' (or whatever you're using) on the OS in question say?
Ubuntu 14.04 doesn't list "\4{<nic>}" as an option and it doesn't work, 16.04 does and it does appear there (might have to press Enter to get a screen refresh).
If the OS doesn't support it then you'll have to get creative (send 'ip addr' output to /etc/issue at boot or periodically) to get what you want.
----- Original Message ----- From: "Arun Khan" knura9@gmail.com To: "centos" centos@centos.org Sent: Monday, October 2, 2017 3:03:00 PM Subject: [CentOS] Display IP addresses on the system console *before* the login prompt.
I have a bunch of VBox Linux VMs (CentOS 6/7, Debian7/8/9, Ubuntu (14.0/16.04, Alpine) that get dynamic IPs. To get their respecitive IP addresses I have to login and run 'ip addr'
I would like such info to be displayed on the VM console *before* the login prompt. Ideally an ASCII log + info (see below sig line). Thus, I can get the info from the VM console without having to login.
I read up on /etc/issue but adding "\4{eth0}" to the existing string does not work.
TIA for solutions/pointers
-- Arun Khan
<console display>
_ _ | |__ ___ ___| |_ _ __ __ _ _ __ ___ ___ | '_ \ / _ / __| __| '_ \ / _` | '_ ` _ \ / _ \ | | | | (_) __ \ |_| | | | (_| | | | | | | __/ |_| |_|___/|___/__|_| |_|__,_|_| |_| |_|___|
lo: 127.0.0.1 eth0: 10.1.1.122 kernel: 4.10.0-33-generic x86_64
login:
</console display> _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On Mon, Oct 2, 2017 at 1:31 PM, Leroy Tennison leroy@datavoiceint.com wrote:
What does 'man agetty' (or whatever you're using) on the OS in question say?
Ubuntu 14.04 doesn't list "\4{<nic>}" as an option and it doesn't work, 16.04 does and it does appear there (might have to press Enter to get a screen refresh).
If the OS doesn't support it then you'll have to get creative (send 'ip addr' output to /etc/issue at boot or periodically) to get what you want.
You are right, Ubuntu 14.04 does not support it and that's where it does *not* work. I read the getty man page in CentOS 7/Ubuntu 16.04 and implemented in Ubuntu 14.04 duh.
-- Arun Khan
El 2/10/17 a las 22:03, Arun Khan escribió:
I read up on /etc/issue but adding "\4{eth0}" to the existing string does not work.
This works for me in CentOS 7 (in /etc/issue)
System IPv4: \4{ens33}
You must replace {ens33} with the nic name you want to show. Get it with ifconfig
Jose Maria Terry Jimenez wrote:
El 2/10/17 a las 22:03, Arun Khan escribió:
I read up on /etc/issue but adding "\4{eth0}" to the existing string does not work.
This works for me in CentOS 7 (in /etc/issue)
System IPv4: \4{ens33}
You must replace {ens33} with the nic name you want to show. Get it with ifconfig
That would be ip a
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